Drop a common logic disabling the FIPS mode in the tests.

We want to run the unit tests in the FIPS mode too.

Author: junaruga

test/openssl/utils.rb

@@ -1,11 +1,6 @@
 # frozen_string_literal: true
 begin
   require "openssl"
-
-  # Disable FIPS mode for tests for installations
-  # where FIPS mode would be enabled by default.
-  # Has no effect on all other installations.
-  OpenSSL.fips_mode=false
 rescue LoadError
 end